Effects of age on balance control during walking
Academic Article

Overview

abstract

OBJECTIVE:To determine the effects of aging on balance control during walking. DESIGN:Two-group repeated-measures design. SETTING:Gait laboratory in Australia. PARTICIPANTS:Convenience sample of 20 healthy older subjects (mean age, 72y) and 20 healthy young subjects (mean age, 24y). INTERVENTIONS:Changes in locomotor performance in response to perturbations to balance were quantified for healthy older adults compared with healthy young adults for (1) straight line walking at preferred speed, (2) straight line walking at fast speed, (3) figure-of-eight walking at preferred speed, and (4) figure-of-eight walking while performing a secondary motor task. MAIN OUTCOME MEASURES:Gait speed, stride length, cadence, and double-limb support duration, using a footswitch system. RESULTS:Healthy older people screened for pathology had gait patterns comparable to young adults for straight line walking at preferred speed. However, multivariate analysis of variance (MANOVA) showed a significant interaction between age and speed when balance was perturbed by requiring subjects to change from walking at preferred to fast speeds (Pillai-Bartlett trace=.259, F(4,35)=3.06, P